Walker Texas Ranger season 1 episodes list:

Episode #1:
One Riot, One Ranger (air date: 1993-04-21)

During a bank robbery in Dallas, Walker's partner is killed. Trying to solve this case, Walker finds out that this raid could have been only a test for a much bigger goal: simultaneously robbing four banks lying next to each other. No one believes him. After a bomb explodes in a far away bank, which has just gotten a valuable load, everyone goes there. When the actual raid starts Walker must face the gang alone.